The above drawing shows clear differences between the the two
systems. Steel ducting or steel based ventilation (left) only
deliver air through specific orifices in the duct. In e.g. a
classroom the students sitting far from an orifice will lack fresh
air whereas the students sitting right below the orifice holes may
experience draught problems.

Textile based ventilation or textile ducting (right) is
characterized by air diffusion across the entire surface, i.e.
throwing air into the occupied zone.

Where steel ducting creates a risk of "dead" zones in the room,
textile ducting offers a uniform distribution of air through the
entire duct. This results in efficient air exchange and healthy
indoor climate.

Textile ducts are tailored in colour, shape and size to match the
architecture and the ventilation demands. Textile ventilation ducts
are easy to install and to adjust and are also energy-efficient
compared with steel ducting.